EP0778791B1 - Filterelement mit faserbeschichtung - Google Patents
Filterelement mit faserbeschichtung Download PDFInfo
- Publication number
- EP0778791B1 EP0778791B1 EP95920888A EP95920888A EP0778791B1 EP 0778791 B1 EP0778791 B1 EP 0778791B1 EP 95920888 A EP95920888 A EP 95920888A EP 95920888 A EP95920888 A EP 95920888A EP 0778791 B1 EP0778791 B1 EP 0778791B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- fiber
- filter element
- supporting body
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 162
- 239000002245 particle Substances 0.000 claims abstract description 57
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 239000011248 coating agent Substances 0.000 claims abstract description 48
- 239000011247 coating layer Substances 0.000 claims abstract description 34
- 239000011148 porous material Substances 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008275 binding mechanism Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
- B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
- B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded
Definitions
- the invention relates to a filter element, comprising a intrinsically stable, porous support body and a compared to that Support body of fine porous fiber coating of the support body on the Inflow surface for fluid to be filtered, the fiber coating partly through fiber / fiber binding and partly through fiber / supporting body binding is bound to the support body.
- US-A-4,212,733 discloses a filter having a first filter layer a porous base material and a second bonded to it Filter layer made of fiber material, the base material being sintered Contains polyethylene powder and the fibers of the second filter layer one Water content from about 0.4 to about 5%, a critical one Surface tension from about 25 to about 45 dynes / cm and one Have fiber diameter from about 5 to about 30 microns. In addition fibers with a water content of about 8 to about 15% to be available.
- FR-A-2 224 192 discloses a filter composition for gases on the Base of a porous, possibly fibrous material. Electrical Conductive, submicroscopic particles are in the porous material incorporated or deposited on it.
- WO 94/09880 discloses a filter element with a large-pore inner Layer and a small-pore outer layer, both layers Have fibers and impregnated with a resin and with each other are connected.
- the invention has for its object a filter element to make available the kind mentioned at the outset, which is characterized by a good compromise between the desired degree of Fine filtration capacity and low pressure loss for that flowing medium to be filtered when using the filter element distinguished.
- the filter element characterized in that the fiber coating has first fibers, the Length is larger than the average pore size of the supporting body, and has second fibers, the length of which to create the Fine porosity of the fiber coating is significantly less than the length of the first fibers.
- the first fibers usually have a length that is significantly larger than the average pore size of the supporting body is, in particular more than twice the average pore size of the Supporting body.
- the second fibers usually have a length that is smaller than the average pore size of the supporting body, especially less than half the average Pore size of the supporting body.
- the fiber coating contains preferably - measured by weight - more second fibers than first fibers, the weight ratio of second fibers to first Fibers is particularly preferably larger than 2: 1. It is preferably the first fibers and the second fibers are fibers from the same material and / or around fibers approximately the same Diameter class. It is often sufficient if less than 10% The weight fraction of the fiber coating is first fibers.
- fine-grained particles are preferably with less than 30 wt .-%, preferably with below 20% by weight, more preferably below 10% by weight, most preferably with 0 to 3% by weight, in each case based on the total weight of fibers and fine-grained particles.
- the invention can be used in filter elements from a variety of Realize materials.
- the support body Plastic or synthetic resin materials, ceramic materials and metallic materials particularly highlighted.
- To the porous Particles of the aforementioned can be produced efficiently Materials sintered together or by others Binding mechanisms, such as the use of a binder, with one another be connected.
- the material of the fibers is ceramic Fibers, in particular made of aluminum silicate, are preferred. But you can also with other fibers, e.g. Glass fibers, natural fibers, synthetic organic fibers and other work.
- the first fibers are preferably in the form of a first fiber coating layer applied and the second fibers thereon as a second coating layer upset. It often happens that the second fibers Part in the spaces between the first fibers of the first Penetrate fiber coating layer, so that in the finished state none clear boundary between the first fiber coating layer and the second fiber coating layer is more. Alternatively, it is possible the first fibers and the second fibers mixed in one step to apply.
- the filter element is also by the in the last paragraph addressed fiber coating with the first fiber coating layer and second fiber coating layer realized.
- the one now addressed Design options aim at the first Fiber coating (the first and second fibers, be it in one common coating layer, be it in two in a row applied coating layers) has at least one further Apply fiber coating layer with a finer porosity. This is preferably done using compared to the first Fiber coating shorter and / or thinner fibers, if necessary also using fibers made of other materials.
- the least a further fiber coating layer does not normally have to be the first Have fibers and second fibers; the first one below Fiber coating provides an ideal basis for applying the represents at least one further fiber coating layer.
- the filter element a coating layer on the outside of the fiber coating fine-grained particles. These particles are preferably so small that this coating layer has the fine filtration capacity of the Filter element essentially determined.
- the fine-grained particles there is a wide choice of materials; you can in particular Plastic particles or inorganic particles. A special one preferred choice will be more detailed below addressed.
- the fine-grained particles can be on each other and on the Fiber coating must be bound as it is for the front Binding of the particles of the supporting body and the fiber / fiber binding or the fiber / support body bond of the fiber coating described has been.
- the filter element which has an inherently stable, porous support body and a, compared to the support body, finer porous fiber coating of the support body on its inflow surface for fluid to be filtered, the fiber coating partly through fiber / fiber binding and partly through fiber / supporting body binding to the Support body is bound, can be made that the fibers for the formation of the fiber coating in the dry state are applied to the inflow surface of the support body, preferably by means of an air stream, an adhesive for creating the fiber / fiber bond and the fiber / support body bond having been previously applied to the inflow surface and / or is applied after the application of at least some of the fibers.
- the filter element which has an inherently stable, porous support body and a, compared to the support body, finer porous fiber coating of the support body on its inflow surface for fluid to be filtered, the fiber coating partly through fiber / fiber binding and partly through fiber / supporting body binding to the Support body is bound, can also be made that the fibers for the formation of the fiber coating are dispersed or suspended in a liquid on the inflow surface of the support body, wherein an adhesive for creating the fiber / fiber bond and the fiber / support body bond has been previously applied to the inflow surface and / or after the application of at least part of the fibers is applied and / or is contained in the carrier liquid.
- the Fibers, so to speak, applied in the wet state which in many Cases is particularly rational.
- simple Possibilities of applying the fiber-in-liquid dispersion or suspension are spraying, spreading, rolling up, but also the immersion of the support body in the dispersion or Called suspension.
- the term "adhesive" in the context of Invention is to be understood in a very comprehensive sense. Below should be understood all materials that are necessary for the operation of the Sufficiently strong adhesion of the fibers to each other and to the filter element the support body, especially adhesives in the narrower sense, Plastics or synthetic resins which produce the binding mentioned assets, organic or inorganic binders such as Soda water glass. It is expressly pointed out that the The inventive method alternatively with others Binding mechanisms fiber / fiber and fiber / support body worked can be, especially with sintering. It is understood that the Adhesive or the binder chosen and in such an amount is used that the functionally required pores or Flow passages between the fibers are not closed become.
- each the fiber coating layers can be according to one of the described Procedures are applied.
- a coating layer of fine-grained can be applied to the fiber coating Particles are applied.
- the coating layer is made fine-grained particles applied using such particles, the one from the intended use of the filter element Fluid flow to be filtered out.
- the coating layer is made fine-grained particles applied using such particles, the one from the intended use of the filter element Fluid flow to be filtered out.
- Fibers and / or the fine-grained particles When applying the Fibers and / or the fine-grained particles can with a suction air flow of the inflow surface of the support body away through it be worked.
- the fibers and / or the fine-grained particles directed to where they are Should form fiber coating.
- a very particularly advantageous possibility is to carry out the described detection of the concentration and / or the size of foreign particles carried along in the case of applying a coating layer of fine-grained particles using those particles which are to be filtered out of a fluid stream during the intended operational use of the filter element.
- the antistatic particles can be applied in particular as a dispersion or suspension.
- connection of the antistatic particles applies analogously to what has been carried out to connect the fibers.
- the filter elements according to the invention are primarily for Fine filtration of gases and air, especially for dedusting of air in production halls on production machines and at Process steps, determined, but can also be used to filter Liquids are used. With appropriate choice of materials can also be hot gases, such as combustion gases, and hot Liquids are filtered.
- Typical average values are in the filter element according to the invention
- Fiber coating is possible with a comparatively large average pore size of the supporting body to work because of a secure bridging of the open pores of the supporting body on the Inflow surface is possible at the same time - as already mentioned described - a formation of the coating with a very fine Pore size.
- one can support bodies with very little Use flow resistance.
- filter elements according to the invention are generated as required Foreign matter particles larger than 5 ⁇ m in size, preferably Foreign matter particles larger than 2 ⁇ m in size, most preferably Foreign matter particles larger than 0.5 ⁇ m in size, almost completely filter out.
- the schematically drawn filter element 2 consists of a supporting body 4, which is provided with a fiber coating 6 on its inflow surface on the right in FIG. 1 for the fluid to be filtered.
- the support body 4 consists of polyethylene particles 8, which are sintered together, so that a porous support body 4 with an average pore size of, for example, 30 ⁇ m results.
- the lower molecular weight polyethylene particles melt more strongly and form a connecting framework for the high molecular weight polyethylene particles 8, which, however, also bond with one another through the sintering process.
- a coating layer is made on the outside of the fiber coating 6 fine-grained particles 16, e.g. Rock dust, applied. This Particles 16 are also glued to each other and to the Fiber coating 6 bound.
- the fibers 10, 12 and / or the particles 16 are in a liquid applied dispersed or suspended, one works preferably with a dispersion adhesive that is in this liquid is introduced.
- FIG. 2 shows a fiber coating state of the filter element 2 after the application of the first fibers 10, but before the application of the second fibers 12. If the second fibers 12 are subsequently applied, they fill the spaces between the first fibers 10 that are still visible in FIG. 2 and form the fiber coating layer 6 shown in FIG. 1 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Multicomponent Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Inorganic Fibers (AREA)
Description
daß die Fasern für die Bildung der Faserbeschichtung im Trockenzustand an der Zuströmoberfläche des Tragkörpers, vorzugsweise mittels eines Luftstroms, aufgebracht werden, wobei ein Klebstoff zur Schaffung der Faser/Faser-Bindung und der Faser/Tragkörper-Bindung zuvor auf die Zuströmoberfläche aufgebracht worden ist und/oder nach dem Aufbringen mindestens eines Teils der Fasern aufgebracht wird.
daß die Fasern für die Bildung der Faserbeschichtung in einer Flüssigkeit dispergiert oder suspendiert an der Zuströmoberfläche des Tragkörpers aufgebracht werden, wobei ein Klebstoff zur Schaffung der Faser/Faser-Bindung und der Faser/Tragkörper-Bindung zuvor auf die Zuströmoberfläche aufgebracht worden ist und/oder nach dem Aufbringen mindestens eines Teils der Fasern aufgebracht wird und/oder in der Trägerflüssigkeit enthalten ist.
- Fig. 1
- einen Ausschnitt eines Filterelements im Schnitt, wobei die Schnittebene rechtwinklig zur Zuströmoberfläche des Filterelements ist;
- Fig. 2
- eine Draufsicht auf einen Teilbereich des Filterelements von Fig. 1, gesehen in Blickrichtung des Pfeils II, wobei ein Zustand mit aufgebrachten ersten Fasern, aber vor Aufbringung der zweiten Fasern und einer Partikel-Beschichtungslage, gezeichnet ist.
- 20 Gew.-%
- Fasern bzw. Partikel
- 6 Gew.-%
- MOWILITH
- 74 Gew.-%
- Wasser
Claims (7)
- Filterelement (2), aufweisend einen eigenstabilen, porösen Tragkörper (4) und eine im Vergleich zu dem Tragkörper (4) feiner poröse Faserbeschichtung (6) des Tragkörpers (4) an dessen Zuströmoberfläche für zu filterndes Fluid, wobei die Faserbeschichtung (6) teils durch Faser/Faser-Bindung und teils durch Faser/Tragkörper-Bindung an den Tragkörper (4) gebunden ist,
dadurch gekennzeichnet,
daß die Faserbeschichtung (6) erste Fasern (10) aufweist, deren Länge größer als die durchschnittliche Porengröße des Tragkörpers (4) ist, und zweite Fasern (12) aufweist, deren Länge zur Schaffung der Feinporosität der Faserbeschichtung (6) deutlich geringer als die Länge der ersten Fasern (10) ist. - Filterelement nach Anspruch 1,
dadurch gekennzeichnet,
daß die ersten Fasern (10) als erste Faserbeschichtungslage aufgebracht sind und die zweiten Fasern (12) darauf als zweite Faserbeschichtungslage aufgebracht sind. - Filterelement nach einem Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß mehrere Faserbeschichtungslagen mit vom Tragkörper (4) weg zunehmender Feinheit der Porosität aufgebracht sind. - Filterelement nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Faser/Faser-Bindung und die Faser/Tragkörper-Bindung durch Klebstoff vorgenommen ist. - Filterelement nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Faser/Faser-Bindung und die Faser/Tragkörper-Bindung durch Sintern vorgenommen ist. - Filterelement nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß außenseitig auf der Faserbeschichtung (6) eine Beschichtungslage aus feinkörnigen Partikeln (16) aufgebracht ist. - Filterelement nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß der Tragkörper (4) aus versinterten Kunststoffteilchen (8) aufgebaut ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4418033A DE4418033A1 (de) | 1994-05-24 | 1994-05-24 | Filterelement mit Faserbeschichtung und Verfahren zu seiner Herstellung |
DE4418033 | 1994-05-24 | ||
PCT/EP1995/001990 WO1995032047A1 (de) | 1994-05-24 | 1995-05-23 | Filterelement mit faserbeschichtung und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0778791A1 EP0778791A1 (de) | 1997-06-18 |
EP0778791B1 true EP0778791B1 (de) | 1999-01-27 |
Family
ID=6518806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920888A Expired - Lifetime EP0778791B1 (de) | 1994-05-24 | 1995-05-23 | Filterelement mit faserbeschichtung |
Country Status (20)
Country | Link |
---|---|
US (1) | US5874000A (de) |
EP (1) | EP0778791B1 (de) |
JP (1) | JP3804026B2 (de) |
CN (1) | CN1066977C (de) |
AT (1) | ATE176174T1 (de) |
AU (1) | AU2616195A (de) |
BR (1) | BR9507747A (de) |
CZ (1) | CZ287000B6 (de) |
DE (3) | DE4418033A1 (de) |
DK (1) | DK0778791T3 (de) |
ES (1) | ES2126897T3 (de) |
HU (1) | HU218840B (de) |
MX (1) | MX9605722A (de) |
NO (1) | NO316497B1 (de) |
PL (1) | PL180743B1 (de) |
RU (1) | RU2108133C1 (de) |
SK (1) | SK281117B6 (de) |
TW (1) | TW317507B (de) |
WO (1) | WO1995032047A1 (de) |
ZA (1) | ZA954207B (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6485813B1 (en) | 1997-03-07 | 2002-11-26 | Koslow Technologies Corp. | Method of stabilizing composite media and media produced thereby |
DE19723585B4 (de) * | 1997-06-05 | 2013-07-25 | Hartwig Straub | Verfahren zur Reinigung eines beladenen Filtermediums |
US6550622B2 (en) * | 1998-08-27 | 2003-04-22 | Koslow Technologies Corporation | Composite filter medium and fluid filters containing same |
US7008465B2 (en) * | 2003-06-19 | 2006-03-07 | Donaldson Company, Inc. | Cleanable high efficiency filter media structure and applications for use |
DE102005012659A1 (de) * | 2005-03-18 | 2006-09-21 | Herding Gmbh Filtertechnik | Filterelement mit Beschichtung zur Oberflächenfiltration |
MD85Y (ro) * | 2006-10-04 | 2009-09-30 | Владимир КЛЕЙМЕНОВ | Material filtrant absorbant stratificat |
US8109534B2 (en) * | 2009-07-22 | 2012-02-07 | Highland Industries, Inc. | Highly thermal resistant material for a vehicle safety device |
EP2470283B1 (de) * | 2009-08-24 | 2016-04-20 | Porvair Plc | Auf einem keramikschaum zur filterung von geschmolzenem material aufgebrachte korrosionsfeste glasbeschichtung |
CN102154954B (zh) * | 2011-05-10 | 2012-07-04 | 衡水国威滤纸有限公司 | 一种适用于沙漠地区汽车空气滤纸及制备方法 |
EP3013450A4 (de) * | 2013-06-26 | 2017-03-08 | FLSmidth A/S | Filtermedien und verfahren zur herstellung davon |
US20150182901A1 (en) * | 2013-12-31 | 2015-07-02 | Bha Altair, Llc | Ridgid porous plastic filters incorporating expanded ptfe membrane |
WO2015185470A1 (de) * | 2014-06-02 | 2015-12-10 | Mann+Hummel Gmbh | Filtersystem und filterelement, mit einem glasfaserfiltermedium und einem sinterkörper |
WO2019036538A1 (en) * | 2017-08-18 | 2019-02-21 | Porex Corporation | POROUS COMPOSITE CARRIERS AND METHODS OF MAKING AND USING THEM |
CN107715573A (zh) * | 2017-11-29 | 2018-02-23 | 成都创客之家科技有限公司 | 一种碎石厂除尘器 |
CN107715597A (zh) * | 2017-11-29 | 2018-02-23 | 成都创客之家科技有限公司 | 一种碎石厂用粉尘滤芯 |
JP2020158351A (ja) * | 2019-03-27 | 2020-10-01 | 日本碍子株式会社 | ハニカム構造体、および、ハニカム構造体の製造方法 |
US11713584B2 (en) * | 2021-09-24 | 2023-08-01 | Linda D. Wilson | Pool strainer basket insect and organic matter trap |
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US3073735A (en) * | 1955-04-18 | 1963-01-15 | American Viscose Corp | Method for producing filters |
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US3399516A (en) * | 1965-06-02 | 1968-09-03 | Wix Corp | Impregnated fiber air filter and method of making same |
DE2317354C3 (de) * | 1973-04-06 | 1984-09-27 | Filzfabrik Fulda Gmbh & Co, 6400 Fulda | Gasfiltermaterial und Verfahren zu seiner Herstellung |
US4212733A (en) * | 1977-12-27 | 1980-07-15 | Somar Manufacturing Co., Ltd. | Oil-water separation filters |
DE3533924A1 (de) * | 1985-09-24 | 1987-06-19 | Schumacher Sche Fab Verwalt | Filterkoerper und verfahren zu dessen herstellung |
DE3844199C2 (de) * | 1988-12-29 | 1996-10-24 | Keller Lufttechnik Gmbh & Co Kg | Filterelement zum Abscheiden von Feststoffpartikeln aus gasförmigen und/oder flüssigen Medien |
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US5728298A (en) * | 1992-10-29 | 1998-03-17 | Cuno, Incorporated | Filter element and method for the manufacture thereof |
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-
1994
- 1994-05-24 DE DE4418033A patent/DE4418033A1/de not_active Withdrawn
-
1995
- 1995-05-23 SK SK1508-96A patent/SK281117B6/sk unknown
- 1995-05-23 DE DE59505003T patent/DE59505003D1/de not_active Expired - Lifetime
- 1995-05-23 PL PL95317320A patent/PL180743B1/pl not_active IP Right Cessation
- 1995-05-23 ES ES95920888T patent/ES2126897T3/es not_active Expired - Lifetime
- 1995-05-23 ZA ZA954207A patent/ZA954207B/xx unknown
- 1995-05-23 CZ CZ19963424A patent/CZ287000B6/cs not_active IP Right Cessation
- 1995-05-23 EP EP95920888A patent/EP0778791B1/de not_active Expired - Lifetime
- 1995-05-23 US US08/737,783 patent/US5874000A/en not_active Expired - Lifetime
- 1995-05-23 BR BR9507747A patent/BR9507747A/pt not_active IP Right Cessation
- 1995-05-23 DE DE19580528T patent/DE19580528D2/de not_active Expired - Lifetime
- 1995-05-23 AT AT95920888T patent/ATE176174T1/de active
- 1995-05-23 AU AU26161/95A patent/AU2616195A/en not_active Abandoned
- 1995-05-23 WO PCT/EP1995/001990 patent/WO1995032047A1/de active IP Right Grant
- 1995-05-23 JP JP53006395A patent/JP3804026B2/ja not_active Expired - Fee Related
- 1995-05-23 HU HU9603238A patent/HU218840B/hu not_active IP Right Cessation
- 1995-05-23 RU RU96124363A patent/RU2108133C1/ru not_active IP Right Cessation
- 1995-05-23 CN CN95193271A patent/CN1066977C/zh not_active Expired - Lifetime
- 1995-05-23 DK DK95920888T patent/DK0778791T3/da active
- 1995-05-24 TW TW084105220A patent/TW317507B/zh active
-
1996
- 1996-11-21 MX MX9605722A patent/MX9605722A/es not_active IP Right Cessation
- 1996-11-22 NO NO964983A patent/NO316497B1/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPH10505531A (ja) | 1998-06-02 |
PL317320A1 (en) | 1997-04-01 |
WO1995032047A1 (de) | 1995-11-30 |
CZ287000B6 (en) | 2000-08-16 |
DK0778791T3 (da) | 1999-06-23 |
EP0778791A1 (de) | 1997-06-18 |
AU2616195A (en) | 1995-12-18 |
HUT77072A (hu) | 1998-03-02 |
SK150896A3 (en) | 1998-01-14 |
ATE176174T1 (de) | 1999-02-15 |
DE19580528D2 (de) | 1997-05-28 |
HU9603238D0 (en) | 1997-01-28 |
RU2108133C1 (ru) | 1998-04-10 |
NO964983D0 (no) | 1996-11-22 |
TW317507B (de) | 1997-10-11 |
SK281117B6 (sk) | 2000-12-11 |
CZ342496A3 (en) | 1997-11-12 |
BR9507747A (pt) | 1997-08-19 |
JP3804026B2 (ja) | 2006-08-02 |
CN1157578A (zh) | 1997-08-20 |
ZA954207B (en) | 1996-01-22 |
US5874000A (en) | 1999-02-23 |
PL180743B1 (pl) | 2001-04-30 |
ES2126897T3 (es) | 1999-04-01 |
HU218840B (hu) | 2000-12-28 |
CN1066977C (zh) | 2001-06-13 |
MX9605722A (es) | 1998-08-30 |
DE59505003D1 (de) | 1999-03-11 |
NO316497B1 (no) | 2004-02-02 |
DE4418033A1 (de) | 1995-11-30 |
NO964983L (no) | 1996-11-22 |
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